Zero is a wild dog who is saved by a boy named Taro after making enemies with hunters. Their carefree days of living on the... more>> streets are interrupted when Zero undertakes a journey to sharpen his fangs. <<less

Crossover one-shot between Mazinkaiser and Shin Getter Robo. It was included in Immortal Super Robot Encyclopedia (不滅のスーパーロボット大全).... more>>

The manga begins with the Mazinger Z and Great Mazinger fighting against an alien machine after the Diana A and Venus A have been taken down. <<less